<!DOCTYPE html>
<html ng-app="myApp">
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<script src="script-tags-for-development.js"></script>
<style>
  div[ng-controller] {
    position: relative;
  }
  #panel {
    position: absolute;
    top: 5px;
    left: 50%;
    margin-left: -90px;
    z-index: 5;
    background-color: #fff;
    padding: 5px;
    border: 1px solid #999;
  }
</style>
<script>
var app = angular.module('myApp', ['ngMap']);
app.controller('PolylineRemoveCtrl', function(NgMap) {
  var vm = this;
  NgMap.getMap().then(function(map) {
    vm.map = map;
  });
  vm.addLine = function() {
    vm.map.shapes.foo.setMap(vm.map);
  }
  vm.removeLine = function() {
    vm.map.shapes.foo.setMap(null);
  };
});
</script>
</head>

<body ng-controller="PolylineRemoveCtrl as vm">
  <div id="panel">
    <input ng-click="vm.removeLine()" type=button value="Remove Line">
    <input ng-click="vm.addLine()" type=button value="Restore Line">
  </div>
  <ng-map zoom="3" center="0, -180" map-type-id="TERRAIN">
    <shape name="polyline" id="foo"
      path="[
        [37.772323, -122.214897],
        [21.291982, -157.821856],
        [-18.142599, 178.431],
        [-27.46758, 153.027892]
      ]"
      geodesic="true"
      stroke-color="#FF0000"
      stroke-opacity="1.0"
      stroke-weight="2">
    </shape>
  </ng-map>

</body>
</html>
